CR701 has been evaluated in a rodent model of neuropathic pain that produces both hyperalgesia (sensitization of nerve endings to painful stimuli) and allodynia (painful perception of innocuous stimuli) comparable to human conditions. As shown in the figure below, administration of CR701 to animals with neuropathy resulted in significant reversal of both hyperalgesia and allodynia, as measured by responses to thermal and tactile stimuli, respectively.